Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hien lang » tien lang, hien trang, khien bang
hieu lang » chieu sang, hieu quang, nhieu tang
trung cua » truong cua, trung tuan, trung cap
tang cua » mang cua, hang cua, tang luan
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan cau » toan cao, toan ban, toan tap

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: doi ((hien lang) OR (hieu lang)) - hanh ((tang cua) or (trung cua)) nhung cong dan toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((hien lang) OR (hieu lang)) - hanh ((tang cua) OR (trung cua)) nhung cong dan toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((hien lang) OR (hieu lang)) - hanh ((tang cua) or (trung cua)) nhung cong dan toan cau".
• Adding a wildcard symbol may retrieve word variants: doi ((hien lang) OR (hieu lang)) - hanh ((tang cua) or (trung cua)) nhung cong dan toan cau*.